package com.example.arithmeticleetcode.leetcode.october;

import java.math.BigDecimal;
import java.util.Arrays;

/**
 * @program: arithmetic-leetcode
 * @description:
 * @author: FangZhen
 * @create: 2020-10-20 09:31
 **/
public class Demo09 {

    public static void main(String[] args) {
        int[] arr1 = {1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3};
        System.out.println(trimMean(arr1));

        int[] arr2 = {6,2,7,5,1,2,0,3,10,2,5,0,5,5,0,8,7,6,8,0};
        System.out.println(trimMean(arr2));


        int[] arr3 = {6,0,7,0,7,5,7,8,3,4,0,7,8,1,6,8,1,1,2,4,8,1,9,5,4,3,8,5,10,8,6,6,1,0,6,10,8,2,3,4};
        System.out.println(trimMean(arr3));

        int[] arr4 = {9,7,8,7,7,8,4,4,6,8,8,7,6,8,8,9,2,6,0,0,1,10,8,6,3,3,5,1,10,9,0,7,10,0,10,4,1,10,6,9,3,6,0,0,2,7,0,6,7,2,9,7,7,3,0,1,6,1,10,3};
        int[] arr5 = {4,8,4,10,0,7,1,3,7,8,8,3,4,1,6,2,1,1,8,0,9,8,0,3,9,10,3,10,1,10,7,3,2,1,4,9,10,7,6,4,0,8,5,1,2,1,6,2,5,0,7,10,9,10,3,7,10,5,8,5,7,6,7,6,10,9,5,10,5,5,7,2,10,7,7,8,2,0,1,1};
        System.out.println(trimMean(arr4));
        System.out.println(trimMean(arr5));
    }

    public static double trimMean(int[] arr) {
        Arrays.sort(arr);
        int minIndex = (int) Math.ceil(arr.length * 0.05);
        int maxIndex = arr.length - minIndex;
        double sum = 0;
        for (int i = minIndex; i < maxIndex; i++) {
            sum += (double) arr[i];
        }
        return sum / (maxIndex - minIndex);
    }
}
